
hello :Â
help :
the discriminat of each quadratic equation :
ax²+bx+c=0 ....(a ≠0) is :
Δ = b² -4ac
1 )  Δ > 0  the equation has two reals solutions : x =
 (-b±√Δ)/2a
2 ) Δ = 0 : one solution : x = -b/2a
3 ) Δ < 0 : no reals solutions